Automotive Forums .com - the leading automotive community online! Automotive Forums .com - the leading automotive community online!
Automotive Forums .com - the leading automotive community online! 
-
Latest | 0 Rplys
Go Back   Automotive Forums .com Car Chat > GMC > Sierra
Reply Show Printable Version Show Printable Version | Email this Page Email this Page | Subscription Subscribe to this Thread
 
Thread Tools
Old 01-13-2014, 12:22 PM   #1
giffo
AF Newbie
 
Join Date: Aug 2004
Location: Clinton Township, New Jersey
Posts: 22
Thanks: 4
Thanked 0 Times in 0 Posts
Question Brake line size for 2005 Sierra

Subject: 2005 Sierra 4WD 1500 Crew Cab.

My 2005 Sierra, with only 42,000 miles on the odometer (legit - I bought the truck new in December, 2004), has been stricken by the corroded brake lines syndrome.

So far, only one line has burst - a line to the left front brake - spraying brake fluid all over the exhaust manifold and leaving me with rear brakes only.

Before spending the money to replace the whole system, I thought I would for the time being at least render the truck drivable by replacing only the burst section.

I'd like to know, before borrowing a car and heading off to the parts store for a generic length of pre-flared tubing, what the tubing diameter is (i.e. 1/4" or 6mm) and what the thread gauge on the fittings is.

Any help will be appreciated.
Attached Images
File Type: jpg IMG_1417a.jpg (45.5 KB, 1 views)

Last edited by giffo; 01-13-2014 at 12:25 PM. Reason: Attachment failed
giffo is offline   Reply With Quote
Old 01-13-2014, 12:29 PM   #2
gmtech1
AF Enthusiast
 
gmtech1's Avatar
 
Join Date: Aug 2011
Location: Beachside
Posts: 2,000
Thanks: 4
Thanked 302 Times in 300 Posts
Re: Brake line size for 2005 Sierra

A GM parts department can tell you for sure the line size, just call and ask. I'm pretty sure it's metric on yours. The fittings that come with the lines will fit the fittings on the truck. Worst case is just cut the fittings off the old line and use them on the new one, if they are not too corroded.
gmtech1 is offline   Reply With Quote
The Following User Says Thank You to gmtech1 For This Useful Post:
giffo (01-13-2014)
Old 01-13-2014, 12:39 PM   #3
rhandwor
AF Enthusiast
 
Join Date: Sep 2006
Location: Athens, Georgia
Posts: 4,662
Thanks: 0
Thanked 64 Times in 64 Posts
Re: Brake line size for 2005 Sierra

Quote:
Originally Posted by giffo View Post
Subject: 2005 Sierra 4WD 1500 Crew Cab.

My 2005 Sierra, with only 42,000 miles on the odometer (legit - I bought the truck new in December, 2004), has been stricken by the corroded brake lines syndrome.

So far, only one line has burst - a line to the left front brake - spraying brake fluid all over the exhaust manifold and leaving me with rear brakes only.

Before spending the money to replace the whole system, I thought I would for the time being at least render the truck drivable by replacing only the burst section.

I'd like to know, before borrowing a car and heading off to the parts store for a generic length of pre-flared tubing, what the tubing diameter is (i.e. 1/4" or 6mm) and what the thread gauge on the fittings is.

Any help will be appreciated.
Take a piece of tubing with you and a fitting. Match the threads on the piece at the store and your fitting. 6mm is not the same as 1/4 is closer to 6.3mm at least I have a S-K 6.2mm socket for 1/4 nuts on my metric set.

Last edited by rhandwor; 01-13-2014 at 05:41 PM.
rhandwor is offline   Reply With Quote
The Following User Says Thank You to rhandwor For This Useful Post:
giffo (01-13-2014)
Old 01-13-2014, 12:40 PM   #4
giffo
AF Newbie
Thread starter
 
Join Date: Aug 2004
Location: Clinton Township, New Jersey
Posts: 22
Thanks: 4
Thanked 0 Times in 0 Posts
Re: Brake line size for 2005 Sierra

Thanks for the advice, gmtech1. I'll ask my questions of the parts store.

Given what has happened to a vehicle that I expected to last me a long time, I'm not in a friendly frame of mind to talk to the GMC dealership - yet.

I don't anticipate re-using the old fittings because I plan to buy a length of pre-flared tube with fittings. In order to re-use the old ones, I'd have to cut and re-flare the replacement section. Although I have a flaring tool, I'm not confident of its ability to create the type of flare necessary.
giffo is offline   Reply With Quote
Old 01-13-2014, 12:44 PM   #5
giffo
AF Newbie
Thread starter
 
Join Date: Aug 2004
Location: Clinton Township, New Jersey
Posts: 22
Thanks: 4
Thanked 0 Times in 0 Posts
Re: Brake line size for 2005 Sierra

My thanks to you too, rhandwor.

I realize that 1/4" is not the same as 6mm, which is why I asked. I put a calipers on the tube and it looks like 1/4", but .2mm difference is too small a difference to be certain.

Yes, I'll be taking the old brake line with me to the store.
giffo is offline   Reply With Quote
Old 01-13-2014, 02:18 PM   #6
gmtech1
AF Enthusiast
 
gmtech1's Avatar
 
Join Date: Aug 2011
Location: Beachside
Posts: 2,000
Thanks: 4
Thanked 302 Times in 300 Posts
Re: Brake line size for 2005 Sierra

Quote:
Originally Posted by giffo View Post
Thanks for the advice, gmtech1. I'll ask my questions of the parts store.

Given what has happened to a vehicle that I expected to last me a long time, I'm not in a friendly frame of mind to talk to the GMC dealership - yet.

I don't anticipate re-using the old fittings because I plan to buy a length of pre-flared tube with fittings. In order to re-use the old ones, I'd have to cut and re-flare the replacement section. Although I have a flaring tool, I'm not confident of its ability to create the type of flare necessary.
Don't hate on the dealer for low quality metal. They just sell what they are given. They can assist you in letting you know what size the pipe is, and may even stock some lengths of it. If not, I'm sure any parts store will have what you need.
gmtech1 is offline   Reply With Quote
The Following User Says Thank You to gmtech1 For This Useful Post:
giffo (01-13-2014)
Old 01-13-2014, 05:17 PM   #7
giffo
AF Newbie
Thread starter
 
Join Date: Aug 2004
Location: Clinton Township, New Jersey
Posts: 22
Thanks: 4
Thanked 0 Times in 0 Posts
Re: Brake line size for 2005 Sierra

Not hating on the dealer, but on GM. Chinese steel for brake lines? Aside from that, it's my understanding that new pre-bent brake lines are not available from GM, so someone like me is going to have to bear the labor cost of having a dealer tech make up new lines.

In any event, I've changed my mind about doing a partial fix myself. I drove the truck this afternoon to see just how dangerous it is. Rear brakes only, of course. And the ABS is probably losing its mind because the left rear is locking up on any heavy application. I just hope I can get it to the dealership without rear-ending anyone.
giffo is offline   Reply With Quote
Old 01-13-2014, 05:26 PM   #8
rhandwor
AF Enthusiast
 
Join Date: Sep 2006
Location: Athens, Georgia
Posts: 4,662
Thanks: 0
Thanked 64 Times in 64 Posts
Re: Brake line size for 2005 Sierra

Quote:
Originally Posted by giffo View Post
Not hating on the dealer, but on GM. Chinese steel for brake lines? Aside from that, it's my understanding that new pre-bent brake lines are not available from GM, so someone like me is going to have to bear the labor cost of having a dealer tech make up new lines.

In any event, I've changed my mind about doing a partial fix myself. I drove the truck this afternoon to see just how dangerous it is. Rear brakes only, of course. And the ABS is probably losing its mind because the left rear is locking up on any heavy application. I just hope I can get it to the dealership without rear-ending anyone.
Its a job to do it your self I've done a few older cars and its a pain I never have done a vehicle with anti lock brakes. I've never observed a Georgia car with rusted out brake lines. Just northern cars where they used salt or someone who lived along the ocean.
rhandwor is offline   Reply With Quote
 
Reply

POST REPLY TO THIS THREAD


Tags
brake , brakelines , brakes , lines , size
Go Back   Automotive Forums .com Car Chat > GMC > Sierra

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off



All times are GMT -5. The time now is 11:36 PM.

Community Participation Guidelines | How to use your User Control Panel

Powered by: vBulletin | Copyright Jelsoft Enterprises Ltd.
 
 
no new posts